The organic rich horizon found at the top of the soil profile is ___the horizon.
A)A
B)O
C)E
D)B
E)C

Question

Quizplus · Accepted Answer

The organic rich horizon found at the top of the soil profile is called the O horizon. It is characterized by a high content of organic matter, such as leaf litter and humus, which makes it darker in color than underlying horizons. The A horizon is the topsoil layer, which has a high concentration of organic matter but also contains mineral particles. The E horizon is a leaching layer, characterized by low organic matter content and a high concentration of sand and silt particles. The B horizon is a subsoil layer, characterized by the accumulation of minerals leached from the overlying horizons. The C horizon is the parent material, consisting of weathered rocks and minerals.

The Organic Rich Horizon Found at the Top of the Soil